Ryobi 990r User Manual
Page 15
15
FREQUENCY
MAINTENANCE REQUIRED
REFER TO:
Daily or
Before
Starting
Engine
Every
10 Hours
Change oil after initial use.
Clean and re-oil air filter.
Page 11
Page 18
Every
25 Hours
Change oil.
Pages 10-11
MAINTENANCE SCHEDULE
These required maintenance procedures should be performed at the frequency stated in the
table. They should also be included as part of any seasonal tune-up.
Fill fuel tank.
Check oil level.
Page 11
Pages 10-11
MAINTENANCE AND REPAIR INSTRUCTIONS
Every
50 Hours
Check spark plug condition and gap.
Check rocker arm to valve clearance.
Check spark arrester screen.
Page 22
Page 22
Page 21
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